C# parses Json into DateTable-C#.Net Tutorial-php.cn

C# parses Json into DateTable

黄舟

Release： 2017-02-18 10:39:49

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C# Parse Json into DateTable

 #region 将 Json 解析成 DateTable
        ///   
        /// 将 Json 解析成 DateTable。  
        /// Json 数据格式如:
        ///     {table:[{column1:1,column2:2,column3:3},{column1:1,column2:2,column3:3}]}
        ///   
        /// 要解析的 Json 字符串  
        /// 返回 DateTable  
        public DataTable JsonToDataTable(string strJson)
        {
            // 取出表名  
            var rg = new Regex(@"(?<={)[^:]+(?=:\[)", RegexOptions.IgnoreCase);
            string strName = rg.Match(strJson).Value;
            DataTable tb = null;

            //数据为空返回
            if (strJson.Trim().Length == 0)
            {
                return tb;
            }
            // 检查strJson是否是json字符串
            if (!JsonSplit.IsJson(strJson))
            {
                return tb;
            }

            try
            {
                // 去除表名  
                strJson = strJson.Substring(strJson.IndexOf("[") + 1);
                strJson = strJson.Substring(0, strJson.IndexOf("]"));

                // 获取数据  
                rg = new Regex(@"(?<={)[^}]+(?=})");
                MatchCollection mc = rg.Matches(strJson);
                for (int i = 0; i < mc.Count; i++)
                {
                    string strRow = mc[i].Value;
                    string[] strRows = strRow.Split(',');
                    // 创建表  
                    if (tb == null)
                    {
                        tb = new DataTable();
                        tb.TableName = strName;
                        foreach (string str in strRows)
                        {
                            var dc = new DataColumn();
                            string[] strCell = str.Split(':');
                            dc.ColumnName = strCell[0].Replace("\"", "");
                            tb.Columns.Add(dc);
                        }
                        tb.AcceptChanges();
                    }
                    // 增加内容  
                    DataRow dr = tb.NewRow();
                    for (int j = 0; j < strRows.Length; j++)
                    {
                        dr[j] = strRows[j].Split(':')[1].Replace("\"", "");
                    }
                    tb.Rows.Add(dr);
                    tb.AcceptChanges();
                }
            }
            catch (Exception ee)
            {
                MessageBox.Show(ee.ToString());
            }
            return tb;
        }
        #endregion

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Identify whether a string is in Json format: http://www.php.cn/csharp-article-352536.html

The format is as follows:

{
    "table": [
        {
            "column1": 1, 
            "column2": 2, 
            "column3": 3
        }, 
        {
            "column1": 1, 
            "column2": 2, 
            "column3": 3
        }
    ]
}

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For example:

[{"Code":"MetaDataId","Name":"MetaDataId"},{"Code":"MetadataCode","Name":"编号"},{"Code":"SolutionName","Name":"名称"}]

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After formatting:

[
    {
        "Code": "MetaDataId", 
        "Name": "MetaDataId"
    }, 
    {
        "Code": "MetadataCode", 
        "Name": "编号"
    }, 
    {
        "Code": "SolutionName", 
        "Name": "名称"
    }
]

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Code formatting tool: http://tool.oschina.net/codeformat/xml

The result after conversion is as follows:

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